red-brick: Rename api_language to language_api_name
red-brick: Add missing word wrap option to environment help label
red-brick/pw: Add default values fors PATH and LANG
red-brick/pi: Stop scroll area from jumping around if buttons are being en/disabled
red-brick/pw: Restore working directory in language edit mode
red-brick: Unify namedtuple definition style
red-brick: Fix VBNET spelling
red-brick/pw: Unify style of combo box items
red-brick: Clear arguments and environment list before adding items in edit mode
red-brick/pi: Add show environment check box